Identity for the second functional derivative of the density functional Hartree plus exchange-correlation functional
Materials Science
2011-08-26 v1
Abstract
It is shown that the integral of the product of the charge density difference of the N- and (N-1)-electron densities of the same Hamiltonian and the second functional derivative of the Hartree plus exchange-correlation functional of the N-electron density is equal to a constant.
Cite
@article{arxiv.1108.5072,
title = {Identity for the second functional derivative of the density functional Hartree plus exchange-correlation functional},
author = {Daniel P. Joubert},
journal= {arXiv preprint arXiv:1108.5072},
year = {2011}
}
Comments
6 pages